如果空气湿度不足,阳光过强,气温过高,盆土失水等,易引发观叶植物出()
A.斑叶反绿病
B.叶黄化病
C.软腐病
D.叶枯焦病
参考答案:D
The doctor thought _____ would be good for you to have a holiday.[ ]
A. this
B. that
C. one
D. it
LAP10320/883型空气预热器正常导向轴承油温(),推力轴承油温()℃,热端扇形板密封间隙指示值()。